From 669ff2a9aa71edea93a0b74c1273080cad68dfb7 Mon Sep 17 00:00:00 2001 From: Lipeng Date: Mon, 23 Oct 2017 19:51:01 +0800 Subject: [PATCH] net: hns3: fix a bug when alloc new buffer [ Upstream commit b9077428ec5569aacb2952d8a2ffb51c8988d3c2 ] When alloce new buffer to HW, should unmap the old buffer first. This old code map the old buffer but not unmap the old buffer, this patch fixes it. Fixes: 76ad4f0 (net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC) Signed-off-by: Lipeng Signed-off-by: David S. Miller Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c index ea121b0b16ac..186772493711 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c @@ -1586,7 +1586,7 @@ out_buffer_fail: static void hns3_replace_buffer(struct hns3_enet_ring *ring, int i, struct hns3_desc_cb *res_cb) { - hns3_map_buffer(ring, &ring->desc_cb[i]); + hns3_unmap_buffer(ring, &ring->desc_cb[i]); ring->desc_cb[i] = *res_cb; ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma); } -- 2.20.1